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happy_lazier

Open on Codeforces · Unique solved

Rating2244· Master

Bar charts count unique accepted problems (merged with the global problem set for rating and tags). Heatmaps use UTC calendar days. Rating squares are sums of newRating − oldRating from user.rating when System update time falls on that day. Submissions count every row from user.status (all verdicts), paginated until Codeforces has no more rows—heavy accounts can take a few seconds.

Rated contests
69
Unique solved
1,275
Submissions (all)
2,947
Years with activity
2023–2025

Solved by problem rating

Unique accepted problems, bucketed by catalog rating (100‑point bands). Unrated = no rating in the problem set.

  • Unrated194
  • 800–899164
  • 900–99937
  • 1000–109937
  • 1100–119960
  • 1200–129950
  • 1300–139953

Solved by topic

Each problem counts once per tag (same as Codeforces tags). Top tags shown; remaining mass in “Other”.

  • greedy532
  • math450
  • constructive algorithms312
  • dp303
  • implementation268
  • brute force258
  • data structures

Rating changes

2023

Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

Count of submissions per UTC day (includes every verdict).

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-14 16:35Educational Codeforces Round 184 (Rated for Div. 2)13+1642244
2025-11-10 17:05Codeforces Round 1063 (Div. 2)407-192080
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)767-92099
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)388+852108
2025-09-24 14:50Codeforces Round 1053 (Div. 1)
1400–1499
46
  • 1500–159929
  • 1600–169935
  • 1700–179946
  • 1800–189944
  • 1900–199939
  • 2000–209934
  • 2100–2199109
  • 2200–229997
  • 2300–239971
  • 2400–249962
  • 2500–259940
  • 2600–269918
  • 2700–27994
  • 2800–28994
  • 2900–29992
  • 248
  • binary search169
  • sortings168
  • combinatorics130
  • number theory115
  • dfs and similar115
  • graphs107
  • two pointers101
  • trees98
  • bitmasks91
  • strings76
  • games51
  • dsu49
  • divide and conquer48
  • interactive29
  • geometry24
  • probabilities23
  • hashing22
  • shortest paths22
  • ternary search10
  • matrices9
  • flows8
  • Other (8 tags)34
  • Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2024

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2025

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 22/day in 2023)

    2024

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 40/day in 2024)

    2025

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 42/day in 2025)

    908
    -90
    2023
    2025-08-24 16:35Codeforces Round 1044 (Div. 2)90+852113
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)790+262028
    2025-07-31 17:35Codeforces Round 1040 (Div. 1)478+612002
    2025-07-27 16:35Codeforces Round 1039 (Div. 2)182+1011941
    2025-07-22 16:35Educational Codeforces Round 181 (Rated for Div. 2)1107-41840
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)1535+231844
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)1341+161821